Obtaining tunable magnetic states in geometrically frustrated multiferroic compound CoCr2O4 by tuning the sublattice magnetic coupling is indeed of high interest from the fundamental and applied points of view. In this work, Fe substitution effects in Co(Cr1-xFex)2O4 (0 ≤ x ≤0.5) are experimentally investigated through detailed measurements of the crystalline structure and magnetization. Our experiments reveal that the samples undergo a magnetic transition characterized by a sharp variation in magnetization from 94 K at x = 0 to 317 K at x = 0.5. The field-cooled process shows that a magnetization reversal phenomenon is observed under a stable positive magnetic field when the measurement undergoes the compensation temperature. A magnetic field-assisted switching effect is realized near the compensation temperature, which possesses the characteristics of high repeatability and stability. The molecular field coefficients are evaluated based on the ferrimagnetic Curie-Weiss fitting, and the exchange interactions within and between the sublattices show a relationship of |JAA| < |JAB| < |JBB|. The magnetization reversal in Co(Cr1-xFex)2O4 is considered to be attributed to the coexistence and competition of A-A, A-B and B-B magnetic interactions, as well as the weakening of spin frustration.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d0cp04783j | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Social robots as conversational catalysts: Enhancing long-term human-human interaction at home.
Sci Robot
March 2025
Personal Robots Group, Media Lab, Massachusetts Institute of Technology, Cambridge, MA, USA.
The integration of social robots into family environments raises critical questions about their long-term influence on family interactions. This study explores the potential of social robots as conversational catalysts in human-human dyadic interaction, focusing on enhancing high-quality, reciprocal conversations between parents and children during dialogic coreading activities. With the increasing prevalence of social robots in homes and the recognized importance of parent-child exchanges for children's developmental milestones, this work presents a comprehensive empirical investigation involving more than 70 parent-child dyads over a period of 1 to 2 months.
View Article and Find Full Text PDFDisrupted microbial cross-feeding and altered L-phenylalanine consumption in people living with HIV.
Brief Bioinform
March 2025
Division of Microbiology, Tulane National Primate Research Center, Tulane University, Covington, LA 70433, United States.
This work aims to (1) identify microbial and metabolic alterations and (2) reveal a shift in phenylalanine production-consumption equilibrium in individuals with HIV. We conducted extensive searches in multiple databases [MEDLINE, Web of Science (including Cell Press, Oxford, HighWire, Science Direct, IOS Press, Springer Nature, PNAS, and Wiley), Google Scholar, and Embase] and selected two case-control 16S data sets (GenBank IDs: SRP039076 and EBI ID: ERP003611) for analysis. We assessed alpha and beta diversity, performed univariate tests on genus-level relative abundances, and identified significant microbiome features using random forest.
View Article and Find Full Text PDFTerminal spin labeling of xylotriose strongly affects interactions in the active site of xylanase BcX.
J Biomol NMR
March 2025
Department of Macromolecular Biochemistry, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands.
Paramagnetic probes provide long-range distance information and report on minor conformations of biomacromolecules. However, it is important to realize that any probe can affect the system of interest. Here, we report on the effects of attaching a small nitroxide spin label [TEMPO, (2,2,6,6-tetramethylpiperidin-1-yl)oxyl] to xylotriose, a substrate of the enzyme xylanase from Bacillus circulans (BcX).
View Article and Find Full Text PDFMyxosortase: an intramembrane protease that sorts MYXO-CTERM proteins to the cell surface.
mBio
March 2025
Department of Molecular Biology, University of Wyoming, Laramie, Wyoming, USA.
Cell surface proteins determine how cells interact with their biotic and abiotic environments. In social myxobacteria, a C-terminal protein sorting tag called MYXO-CTERM is universally found within the Myxococcota phylum, where their genomes typically contain dozens of proteins with this motif. MYXO-CTERM harbors a tripartite architecture: a short signature motif containing an invariant cysteine, followed by a transmembrane helix and a short arginine-rich C-terminal region localized in the cytoplasm.
View Article and Find Full Text PDFPathogenic variants in and genes associated with female breast and ovarian cancer in the Mexican population.
J Med Life
January 2025
Department of Chemical-Biological Sciences, Autonomous University of Ciudad Juarez, Ciudad Juarez, Chihuahua, Mexico.
Breast and ovarian cancers are significant global health challenges, with inherited variations in breast cancer gene 1 () and breast cancer gene 2 () substantially increasing the risk, aggressiveness, and early onset of these diseases. This work aimed to examine pathogenic variants (PVs) in and databases that include Mexican populations. A systematic review of literature and data mining spanning from 2002 to 2023 was conducted.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!